title: Predicting the length of hospital stay of psychiatry patients using signal detection analysis.
abstract: In Japan, the length of hospital stay (LOS) at psychiatric institutions often exceeds a year, and factors related to such stays have been identified. However, we do not know how multiple patient, hospital, and physician factors interact to determine LOS. Patient data were collected from a psychiatric hospital in Osaka, Japan. We developed subgroups, which were determined by interactions related to LOS using signal detection theory. In acute or emergency wards, five factors related to LOS were identified, and subjects were categorized into six subgroups. The indices obtained by the five factors ranged 2.49-3.47 for odds ratio, 0.47-0.84 for sensitivity, 0.40-0.76 for specificity, and 0.52-0.71 for positive predictive value. In general wards, five factors related to LOS were identified, and subjects were categorized into six subgroups. The indices obtained by the five factors ranged 3.02-5.36 for odds ratio, 0.58-0.86 for sensitivity, 0.37-0.68 for specificity, and 0.85-0.92 for positive predictive value. Psychiatrists who have been practicing longer in acute or emergency wards appear to have significantly longer stay of patients, and older or more severe patients tend to be in need of longer inpatient care. Our results provide findings that may be helpful in decreasing LOS at psychiatric hospitals.
authors.affiliation: Kyushu University, Graduate School of Medicine, Department of Health Services Management and Policy, Higashi-ku, Fukuoka 812-8582, Japan. Electronic address: fase_bzm@uinjkt.ac.id.
authors.forename: Fase
authors.initials: F
authors.lastname: Badriah
authors.forename: Takeru
authors.initials: T
authors.lastname: Abe
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Nabeshima
authors.forename: Kouji
authors.initials: K
authors.lastname: Ikeda
authors.forename: Kenji
authors.initials: K
authors.lastname: Kuroda
authors.forename: Akihito
authors.initials: A
authors.lastname: Hagihara
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006778:Hospitals, Psychiatric / Q000706:statistics & numerical data*; D006801:Humans; D007564:Japan; D007902:Length of Stay / Q000706:statistics & numerical data*; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology* / Q000534:rehabilitation*; D008875:Middle Aged; D010343:Patient Admission / Q000706:statistics & numerical data; D010361:Patients; D011237:Predictive Value of Tests; D011570:Psychiatry; D017603:Signal Detection, Psychological; D055815:Young Adult
keywords: Outcome; Prediction; Signal detection analysis